Tamarind Master Printer Kenneth Tyler establishes Gemini Ltd in Los Angeles. A year later in 1966, Tamarind Master Printer Kenneth Tyler co-founds Gemini G.E.L. with Sidney Felson and Stanley Grinstein in Los Angeles. Then in 1973 Tyler leaves Gemini G.E.L. and establishes Tyler Workshop Ltd in Bedford Village, New York (later renamed Tyler Graphics Ltd).
(image source: https://kennethtylercollection.net/category/gemini-gel/)